黑龙江八一农垦大学学报
黑龍江八一農墾大學學報
흑룡강팔일농은대학학보
Journal of Heilongjiang August First Land Reclamation University
2015年
4期
87-91
,共5页
钢纤维活性粉末混凝土%高温%爆裂性能%爆裂机理
鋼纖維活性粉末混凝土%高溫%爆裂性能%爆裂機理
강섬유활성분말혼응토%고온%폭렬성능%폭렬궤리
steel-fiber RPC%high temperature%spalingl performance%spalling mechanism
钢纤维活性粉末混凝土在高温下会发生爆裂破坏,使其在工程中的应用受到严重制约. 从爆裂起始温度及爆裂持续时间、爆裂破坏形态几方面对钢纤维活性粉末混凝土的高温爆裂性能进行了研究.对比分析了水胶比、含水率、升温速度和试件尺寸对钢纤维活性粉末混凝土的高温爆裂的影响; 并从蒸汽压力机理及热应力机理两方面分析了活性粉末混凝土高温下的爆裂机理. 通过这些对比分析,形成了对钢纤维活性粉末混凝土高温爆裂性能的初步认识.
鋼纖維活性粉末混凝土在高溫下會髮生爆裂破壞,使其在工程中的應用受到嚴重製約. 從爆裂起始溫度及爆裂持續時間、爆裂破壞形態幾方麵對鋼纖維活性粉末混凝土的高溫爆裂性能進行瞭研究.對比分析瞭水膠比、含水率、升溫速度和試件呎吋對鋼纖維活性粉末混凝土的高溫爆裂的影響; 併從蒸汽壓力機理及熱應力機理兩方麵分析瞭活性粉末混凝土高溫下的爆裂機理. 通過這些對比分析,形成瞭對鋼纖維活性粉末混凝土高溫爆裂性能的初步認識.
강섬유활성분말혼응토재고온하회발생폭렬파배,사기재공정중적응용수도엄중제약. 종폭렬기시온도급폭렬지속시간、폭렬파배형태궤방면대강섬유활성분말혼응토적고온폭렬성능진행료연구.대비분석료수효비、함수솔、승온속도화시건척촌대강섬유활성분말혼응토적고온폭렬적영향; 병종증기압력궤리급열응력궤리량방면분석료활성분말혼응토고온하적폭렬궤리. 통과저사대비분석,형성료대강섬유활성분말혼응토고온폭렬성능적초보인식.
Steel-fiber reactive powder concrete(RPC) will burst at high temperature,which has hindered the wide application of this concrete in practice. The spalling properties of steel-fiber RPC were analyzed by comparing spalling starting temperature,spalling lasting time and spalling failure mode. The factors affecting spalling of steel-fiber RPC at high temperature were analyzed. They were water binder ratio,water ratio,velocity of increasing temperature and dimension of sample. The spalling mechanism of steel-fiber RPC was analyzed by using steam pressure mechanism and thermal stress mechanism. Through this comparison and analysis,the preliminary idea of palling properties of steel-fiber RPC at high temperature were given.
